code: def set_start_time(self):
      self._start_time = dt.now()
  
file_path: miceforest/miceforest/logger.py
imports: from .compat import pd_Series, pd_DataFrame, PANDAS_INSTALLED
  from datetime import datetime
  from typing import Dict, Any
label_desc: Use image node_id 4 for calling the Logger obj's underlying member method code with example usage: obj.set_start_time() without return types